Somewhere beneath the improved pasture at Dunnstown, Co. Kildare, three circular enclosures sit in close formation, invisible to anyone standing above them. The only evidence that they exist at all comes from a single aerial photograph, reference N337-6, in which differential crop growth betrays what the levelled ground conceals. Cropmarks of this kind appear when buried ditches or banks affect the moisture and nutrient content of soil above them, causing the vegetation to grow at slightly different rates; from the air, the outlines ghost through.

The grouping consists of one larger circular enclosure with two smaller companions positioned to its north-west and north-north-east. All three are recorded as cropmarks, classified separately as KD024-051001, KD024-051002, and KD024-051003. Circular enclosures of this type are broadly associated with early medieval settlement in Ireland, though without excavation it is impossible to be more specific about date or function. What makes this cluster quietly notable is the arrangement itself: a principal enclosure attended by two smaller ones is a pattern sometimes associated with high-status ringfort complexes, though again, the aerial evidence alone does not confirm that reading. No surface trace of any of the three survives, and an electricity station now stands on or immediately adjacent to the site.